燒石膏

{{infobox mineral
| name = 燒石膏
| image = Bassanite-192766.jpg
| imagesize = 260px
| alt =
| caption = 來自南澳大利亚艾尔半岛金巴的白色放射状针状燒石膏晶体
| category = 硫酸鹽礦物
| formula = CaSO4·0.5H2O
|IMAsymbol=Bss
| strunz = 7.CD.45
| dana =
| system = 單斜
| symmetry = C2 (No. 5)
| unit cell = a = 12.0317 Å,
b = 6.9269 Å,
c = 12.6712 Å, β = 90.27°; Z = 12
| color = 白色
| habit = 平行聚集體中的微觀針狀晶體，假六角形
| twinning = {101}雙面
| cleavage =
| fracture =
| tenacity =
| mohs =
| luster = 泥土光澤
| streak = 白色
| diaphaneity = 半透明
| gravity = 2.69–2.76
| density =
| polish =
| opticalprop = 雙軸 (+)
| refractive = nα = 1.550–1.559, nβ = 1.560,
nγ = 1.577–1.584
| birefringence =
| pleochroism =
| 2V = 10–15°
| dispersion =
| extinction =
| length fast/slow =
| fluorescence =
| absorption =
| melt =
| fusibility =
| diagnostic =
| solubility =
| impurities =
| alteration = 加熱脫水成硬石膏
| other =
| references =
}}
燒石膏（），又稱半水石膏、熟石膏，是一種含鈣硫酸鹽礦物，化學式為CaSO4·0.5H2O或2CaSO4·H2O。

燒石膏於1910年首次被描述為在維蘇威火山上出現。它以意大利古生物學家Francesco Bassani（1853–1916）的名字命名。

中药里叫做煅石膏。甘、辛、涩，寒。归肺、胃经。

参见

• 以人名命名的矿物列表

參考資料